MTRR support

I'v been using arch for over a year but I'm still a newbie with alot of thetechy linux stuff, so posting this in the newbie catagory seemedapropriate. I found alot of info on the web for setting up MTRR but notmuch info on the specific mem addresses to use or the disadvantagesof using MTRR.

I do alot of cad programming on my box which isn't directly relatedto linux in general other than set up of custom software. To increaseperformance I needed to set up MTRR suport. Can anyone tell meif I did this correctly?

I have a dual monitor configuration on two seperate graphics cards setupas two independant screens. A gforce3 64mb agp card and a gforce464mb pci card.

In kde auto start I created a executable to run these commands at kdestart. I'm not sure if this is the best way of doing this although I normally run graphics hungry software from xterm login, so Itype this in manually....

My questions are.... Did I do this correctly?Does this seem like a correct output from # cat /proc/mtrr?Are there any dissadvantages to using MTRR and if so can I optimizeit better to lesson the dissadvatages?

Since I usually run my cad software from a Xterm login to save resourcesI was wondering if I can add the MTRR lines to my grub/menu.lst so Idon't have to type them in each time after boot when working from Xterm?